Molten Duplication

Red does not get to keep copies, and this is the entire wager: two mana buys you any artifact or creature you control, duplicated, hastened, and gone by the end step. That sacrifice clause is not a downside bolted on for balance so much as the reason the card can exist in red at all. Blue clones the thing and keeps it; red rents it for a turn and takes the enters-the-battlefield trigger, the attack, or the tap ability as payment. The design leans hard on that window. Point it at a creature and you get a hasty attacker plus a doubled ETB; point it at an artifact and you get a second copy of whatever the original does when it lands or when it is sacrificed, which is where the card turns from a combat trick into an engine. The added artifact type on the token is the quiet enabler here: it makes the copy fodder for artifact-sacrifice payoffs and affinity counts even when the thing you copied was a creature, so the end-step sacrifice feeds a second board rather than just clearing the token away. It is the sort of effect white and blue have long owned, translated into red's grammar of speed and impermanence: you do not get to build a permanent advantage, you get to spend one, right now, and the clock is already running.